psql is the interactive command-line terminal of the RDBMS
PostgreSQL. Those two are in no way synonymous.
Postgres is a widely-used nickname for PostgreSQL,
There are a number of questions that explicitly deal with
psql, not directly with
PostgreSQL. Some examples:
Yet, a tag synonym has been approved on May 23 - created by a user that provided a total of 4 answers tagged postgresql.
I see no way to correct this mistake here or anywhere. Or at least to vote for it. I think such a feature would be generally well received.
For now it seems I need an admin to lend a hand?
It just encourages - nay forces! - incorrect use of terms. Can we please fix this?